Granted Patent
Utility
US 6,235,666 · App. 09/277,749
Grey glass composition and method of making same
Inventors:
Gary Seldon Cochran, Anthony V. Longobardo, Ksenia A. Landa, Leonid Landa
Patented Case
View Patent ↗
Granted: May 22, 2001
Filed: Mar 29, 1999
Inventors
Gary Seldon Cochran
Anthony V. Longobardo
Ksenia A. Landa
Leonid Landa
Assignee (at issue)
Guardian Industries Corp.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.